Here are some key steps to troubleshoot this issue:

1. Check if the event has a different time zone.

2. Check if you have the latest version of Microsoft Calendar.

3. Check for any software updates of the calendar app.

4. Check if the time displayed in the event is in the local time zone.

5. Verify if the settings in your calendar are configured correctly.

6. Check if the time zone of the calendar is set correctly.

7. Verify if the time zone of your computer is functioning properly.